Product Parameters
| 409/409L Stainless Steel Coil Specification |
ASTM A240 / ASME SA240 |
| 409/409L Stainless Steel Coil Manufacturing Process |
Hot Rolled (HR) / Cold Rolled (CR) |
| 409/409L Stainless Steel Coil Grades |
201 / 304 / 304L/ 409/409L / 309S / 420 / 316 / 316L / 316Ti / 317L / 321 / 321H / 347 / 347H / 904L etc. |
| UNS No. - UNS S409/409L, UNS S31008, UNS S31600, UNS S31603, UNS S31603, UNS S31600, UNS S31703, UNS S32100, UNS S34700, UNS S34709, UNS S8904 |
| EN No. 1.4512,1.4845, 1.4401, 1.4404, 1.4571, 1.4438, 1.4541, 1.4550, 1.4551, 1.4539 |
| 409/409L Stainless Steel Coil Thickness |
0.6 MM TO 16 MM THICKNESS |
| 409/409L Stainless Steel Coil Width |
1250 MM / 1500 MM / 2000 MM / 04 Feet / 05 Feet and Custom Cut Width as Per Requirement |
| 409/409L Stainless Steel Coil Length |
2400 MM / 2420 MM / 6000 MM / 08 Feet / 10 Feet / Coil Cut and Custom Cut Length as Per Requirement |
| 409/409L Stainless Steel Coil Surface Finish |
2B, 2D, BA, MATT, MATT PVC, No.4, No.5, SB, HR, No.8, Mirror, Hairline, Brush, Textured, Oil base wet Polished, Both sides Polished available. |
| 409/409L Stainless Steel Coil Coating |
PVC coating Normal / Laser, Film: 100 micrometer, Color: black/white. |
| 409/409L Stainless Steel Coil Other Testing |
NACE MR0175, Ultrasoung TEST, IGC TEST, Intergranular Corrrosion Test as per ASTM A262 Practice E, Charpy Impact Test, Macro, Grain Size, Hardness, etc. |
| 409/409L Stainless Steel CoilValue Added Services |
Gas Cutting / CNC Plasma Cutting / Profiling / Rolling / Bending / Sheet Metal Fabrication / Drill / Punch / Machining / Sand Blasting / Shot Blasting / Heat Treatment |
| 409/409L Stainless Steel Coil Packaging |
Loose / Carrate / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps |
| 409/409L Stainless Steel Coil Shipment & Transportation |
By Road - Truck / Train Partial Load, Full Load, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| 409/409L Stainless Steel Coil Material Test Certificate |
Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved ETC |
| Manufacturer |
POSCO, Aperam, Jindal Stainless, DKC Korea, Thyssenkrup, Baosteel, TISCO,Arcelor Mittal, VDM,Nippon Metal,Qingshan,Delong. |
| Shipping Port |
Shanghai/Ningbo port/Tianjin/Qindao |
Detailed Photos
Global leader in stainless steel Coil fabrication services
Type 409 Stainless Steel (UNS S40900) is a stabilized ferritic stainless steel that has higher oxidation and corrosion resistance than carbon steel. The ease of manufacture, paired with its corrosion resistance and affordability, has considerably increased its use in automotive exhaust and other non-automotive applications. ASTM A240 specifies three (3) subcategories of Type 409 stainless steel: UNS S40910, UNS S40920, and UNS S40930. Each of these designations has slightly different Ti or Nb stabilization requirements. Unless the purchaser specifies otherwise, any of these compositions may be given as UNS S40900. It is manufactured with improved formability properties known as "High Performance" or "Ultra Form" in the industry.
Daxun Stainless Steel realizes the full traceability of each stainless steel coil from the ERP system, including type, specification, and origin, and advocates and encourages industry anti-counterfeiting. Daxun Stainless Steel relies on technology for processing and customization, and high precision and high quality are the industry benchmark; in terms of service, it promotes product life cycle management, provides professional material selection and processing solutions before sales, strictly monitors during sales, and provides worry-free service guarantees after sales.
Quality, delivery, inspection
- Daxun also conducts several quality assurance tests. These tests include flattening test, pitting and resistance test, mechanical test, hardness test, material positive identification, expansion test, etc. All these tests ensure that the material is suitable for the required application.
- During the production process, we measure the diameter, thickness, and surface of the product. Our standard delivery time is 7-15 days, except for some special size products, our delivery time will increase to 20 days.
Our delivery time is strictly in accordance with the contract.
- Support customer third-party agencies to go to the factory for inspection
- Support free samples to customers for testing
- Support on-site or video factory inspection
Ordering Information
Purchase orders should include quantity, grade, type or category, API5L reference, thickness, width, length, and any applicable attachments or additional requirements related to chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coating or end finish. Contact Daxun now, we will reply to your email as soon as possible.
Packaging & Shipping
Company Profile
Daxun's stainless steel business began in 2003. After 20 years of rapid development, its stainless steel materials and processing business have long been at the forefront of China's industry.
Daxun has been engaged in overseas business for more than 20 years. In 2022, its export revenue exceeded US$100 million, and its export volume ranked among the top stainless steel trade and processing companies in China. We have established three export service bases in China, and have joined hands with engineering companies, steel mills, and international trading companies to serve overseas markets. We continue to improve our service capabilities, establish three export service bases in China, and work with engineering companies, steel mills, and international trading companies to expand overseas markets.
Daxun International can provide stainless steel chain supermarket services, and has long-term cooperation with dozens of well-known steel mills around the world. It has 60,000 tons of ordinary stainless steel and 20,000 tons of metals such as duplex steel, nickel-based alloys, and heat-resistant steel. Daxun International's stainless steel materials are of reliable quality and never fake. The varieties, specifications, and delivery weights strictly meet the standards.
Daxun has multiple steel processing equipment, a professional physical and chemical testing center, and processing lines such as "cutting, grinding, forming, beveling, welding, heat treatment, machining, and spraying".
Services cover more than 30 industries including automobiles, home appliances, elevators, new energy, vacuum semiconductors, food and beverage/bio-fermentation, petrochemicals, energy equipment, etc. Cooperating with steel mills, research institutes and other institutions, we provide integrated services from project design, material development to processing and manufacturing process optimization.
409 Stainless Steel Coil chemical composition
| Element |
UNS S40910 |
UNS S40920 |
UNS S40930 |
| Carbon |
0.030 max. |
0.030 max. |
0.030 max |
| Manganese |
1.00 max. |
1.00 max. |
1.00 max. |
| Sulfur |
0.020 max. |
0.020 max |
0.020 max |
| Phosphorus |
0.040 max. |
0.040 max. |
0.040 max. |
| Silicon |
1.00 max. |
1.00 max. |
1.00 max. |
| Chromium |
10.5 - 11.7 |
10.5 - 11.7 |
10.5 - 11.7 |
| Nickel |
0.50 max. |
0.50 max. |
0.50 max. |
| Nitrogen |
0.030 max. |
0.030 max. |
0.030 max. |
| Titanium |
6x(C+N) min. - 0.50 max. |
8X(C+N)min. / 0.15 - 0.50 |
0.05 min. |
| Niobium |
0.17 max. |
0.10 max. |
|
| Ti + Nb |
|
|
[0.08+8x(C+N)] min. - 0.75 max. |
409 Stainless Steel Coil Mechanical properties
| Type |
Yield Strength 0.2% offset (KSI) |
Tensile Strength (KSI) |
% Elongation (2″ Gauge length) |
| S40910 |
25 min. |
55 min |
20 min. |
| S40920 |
25 min. |
55 min. |
20 min. |
| S40930 |
25 min. |
55 min. |
20 min. |
409 Stainless Steel Coil Physical Properties
| Density (lb./ in^2) @ RT |
|
0.28 |
| Modulus of Elasticity in Tension (psi x 10^6) |
|
29 |
| Specific Heat (BTU/o F/lb.) |
32 to 212 oF |
0.114 |
| Thermal Conductivity (BTU/hr/ft^2/ft) |
212oF |
14.4 |
| Mean Coefficient of Thermal Expansion (in. x 10^-6 per o F) |
32 to 212oF |
5.84 |
| |
32 to 500oF |
6.12 |
| |
32 to 900oF |
6.6 |
| |
32 to 1,200oF |
6.86 |
| Electrical Resistivity (micro ohms - cm) |
at 70oF |
60 |
| Oxidation Resistance - Continuous Service(oF) |
|
1450 |
Certifications
Grade 409
- Grade 409 is titanium-stabilized ferritic stainless steel. Grade 409, a general-purpose chromium stainless steel, is mostly used for automotive exhaust systems. This material is suitable for applications that prioritize mechanical qualities, corrosion resistance, and weldability over appearance, especially at high temperatures.
- ASTM requirements, including ASTM A240M for flat rolled steel, now use S40910, S40920, and S40930 as "sub-grades" instead of generic grade 409.
- These are stabilised to varying degrees with titanium, niobium, or a combination of the two.Any of these could be certified as S40900 (Grade 409). ASTM A268M only lists standard Grade 409 for covering tubes.
Corrosion Resistance:
- Grade 409 is resistant to both atmospheric and exhaust gas corrosion. In most environments, a light surface rust develops, which prevents further corrosion but is not suitable for cosmetic purposes. Corrosion resistance is comparable to 3CR12 and 12% chromium martensitic grades (410), but lower than 17% chromium grade 430.
Heat resistance
- 409 is resistant to scaling in intermittent service up to 815°C and continuous service up to 675°C. However, these temperatures vary according on the specific service environment.
Heat Treatment
- Annealing Heat to 790-900 degrees Celsius and then cool with air. This grade cannot be toughened through heat treatment.
Welding
- Easy to weld, however a pre-heat of 150-260°C is suggested. Although Grade 409 or Grade 430 electrodes or filler rods can be used, welding using Grade 309 rods or electrodes is pre-qualified per AS 1554.6. These austenitic fillers produce a more ductile weld.
- Post-weld annealing at 760-815°C increases weld ductility.
Welding tiny sections does not require post-weld annealing. Automotive exhaust tubing is usually welded without filler metal (autogenously).
To avoid the impacts of grain formation, all welding must be done with as little heat as possible.
Typical Applications
Automotive exhaust systems, such as catalytic converters and mufflers.
Specified Properties
- ASTM A268M specifies the parameters of Grade 409 for annealed tubing. ASTM A240M specifies the composition of additional grades for coil and sheet applications. Other items' specifications may include similar but not identical properties.
FORMING:
- 409 stainless can be cut, blanked stretch formed and drawn without difficulty. The formability characteristics of Type 409 are very similar to carbon steel.
Q1: What products can you offer?
A: We can offer you general steel types like 310S, 316L,304.304L.201,904L, 316H, 316,316L 300and
400 series, and duplex stainless steel like 2205, 2304,2101,2507,etc. 904L, 800H, 600H high-nickel alloy.
Q2. Can you produce the products according to my own drawings?
Yes, we can produce the products according to your drawings that will be most satisfy you.
Q3. How does your factory do regarding quality control?
Quality is a priority. We always attach great importance to quality controlling from the beginning to end.
Q4. Can I request to change the form of packaging and transportation?
Yes, We can change the form of the packaging and transportation according to your request,
but you have to bear their own costs incurred during this period and the spreads.
Q5. How does your factory do regarding quality control?
Quality is a priority. We always attach great importance to quality controlling from the beginning to end.
Q6. How long is the delivery time?
A: 7~20 working days after confirming the payment.
If the order is urgent, we will push our workshop finish in advance.
Q7. What is your Payment?
A: 100% T/T advance, Western Union (For Small Order)
B: 30% T/T and balance 70% before the shipment
C: 100% Irrevocable LC at sight (For Big Order)
Q8: Can you make DDQ ( Deep Drawing Quality)?
A: Yes, we can. Our material can be used for stainless steel pots, stainless steel sinks, stainless steel bowls etc. U can tell us your usage, and we will adjust the mechanical propertise to meet your requirement.
Q9: How to get a sample?
A: FREE samples are available for your checking and testing.If you require for a small piece,we can afford courier cost,it depends.
Q10:Which country have you exported to?
A:Until now,we have exported stainless steel material to following countries: Vietnam,Thailand,Turkey,Russia,Maroc,Korea,India,Pakistan,UAE,Ukraine and so on.
Q11: How to visit your company?
A:By flight to Guangzhou Baiyun International airport,then we will pick you up.
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